<template>
	<view class="container">

		<view>
			<!-- 列表 -->
			<view class="cart-list" v-if="isLogin">
				<block v-for="(item, index) in cartList" :key="item.id" v-if="item.num>0">
					<view class="cart-item" :class="{'b-b': index!==cartList.length-1}" >
						<view class="image-wrapper">
							<image @click="detail(item.id)" :src="item.img" 
								:class="[item.loaded]"
								mode="aspectFill" 
								lazy-load 
								@load="onImageLoad('cartList', index)" 
								@error="onImageError('cartList', index)"
							></image>
							<view 
								class="yticon icon-xuanzhong2 checkbox "
								:class=" item.checked?'text-green':''"
								@click="check('item', index)"
							></view>
						</view>
						<view class="item-right">
							<text class="text-over title" @click="detail(item.id)">{{item.title}}</text>
							<view class="bot-row " >
								<text class="attr" @click="detail(item.sid)">库存：{{item.stock}} </text>
								<text v-if="item.group_id>1" class="coupon-tip" style="width: 110upx; margin-left: 20upx; text-align: center;">已享{{item.vipzk}}折</text>
							</view>
							<view class="bot-row">
								<text class="price" @click="detail(item.sid)">¥{{item.money}}</text>
								<text v-if="item.group_id>1" class="price text-line" style="float: right;font-size: 20upx; text-align: center; color: #999;">打折前¥{{item.yprice}}</text>
							</view>
							
							<uni-number-box 
								class="step"
								:min="0" 
								:max="item.stock"
								:value="item.num>item.stock?item.stock:item.num"
								:isMax="item.num>=item.stock?true:false"
								:isMin="item.num===0"
								:index="index"
								:id="item.id"
								@eventChange="numberChange"
							></uni-number-box>
						</view>
						<!-- <text class="del-btn yticon icon-fork" @click="deleteCartItem(index)"></text> -->
					</view>
				</block>
				<empty v-if="empty" ></empty>
			</view>
			<!-- 底部菜单栏 -->
			<view class="action-section">
				<view class="checkbox">
					<image 
						:src="allChecked?'/static/selected.png':'/static/select.png'" 
						mode="aspectFit"
						@click="check('all')"
					></image>
					<!-- <view class="clear-btn" :class="{show: allChecked}" @click="clearCart">
						清空
					</view> -->
				</view>
				<view class="total-box">
					<text class="price">¥{{total}}</text>
				</view>
				<button type="primary" class="no-border confirm-btn" @click="createOrder">去结算</button>
			</view>
		</view>
	</view>
</template>

<script>
	import {
		mapState
	} from 'vuex';
	import uniNumberBox from '@/components/uni-number-box.vue'
	import empty from "@/components/empty";
	export default {
		components: {
			empty,
			uniNumberBox
		},
		data() {
			return {
				total: 0, //总价格
				allChecked: false, //全选状态  true|false
				empty: false, //空白页现实  true|false
				cartList: [],
				List:[],
				isLogin: false,
				userinfo:[],
			};
		},
		onLoad(){		
			uni.setNavigationBarTitle({
			    title: '购物车'
			});
		},
		onShow() {
			uni.removeStorageSync('GwcData');
			this.info()
		},
		watch:{
			//显示空白页
			cartList(e){
				let empty = e.length === 0 ? true: false;
				if(this.empty !== empty){
					this.empty = empty;
				}
			}
		},
		computed:{
			...mapState(['hasLogin'])
		},
		methods: {
			info() {
				this.cartList=[];
				let this_=this
				let data = {};
				data.id=this.id
				if(uni.getStorageSync("token")){
					data.token = uni.getStorageSync("token");
					this.isLogin = true
				}
				this.$ajax('post','cart/index').then(res=>{
					 res.data.forEach(item=>{
						item.checked = true;
					});
					this.$set(this,'cartList',res.data)
					console.log(this.cartList)
					// this.cartList = cartList;
					this.calcTotal(); 
				})
				this.$ajax('post','cart/num').then(res=>{
					uni.setTabBarBadge({
						index:2,
						text:res.data
					})
				})
				 
			},
			showLoginAct(){
				uni.navigateTo({
					url:'/pages/login/login'
				})
			},
			addgwc(sum,id){
				console.log(sum,id)
				let this_=this
				let data = {};
				data.sku_id=id
				data.num=sum;
				data.loding=false;
				if(uni.getStorageSync("token")){
					 this.$ajax('post','cart/newcart',data).then(res=>{
					 	this.$ajax('post','cart/num').then(res=>{
					 		uni.setTabBarBadge({
					 			index:2,
					 			text:res.data
					 		})
					 	})
					 })
				}else{
					uni.showModal({
						title: '温馨提示',
						content: '请先登后添加购物车',
						showCancel: true,
						confirmText: "确定",
						success: function (res) {
							if (res.confirm) {
								uni.navigateTo({
									url:'/pages/login/login'
								})
							} else if (res.cancel) {
								
							}
						}
					});
					return false;
				}
			},
			setTabBarBadges(count){
				if(count>=99){
					count='99+'
				}
				if(count<=0){
					uni.removeTabBarBadge({
					  index: 2
					})
				}else{
					uni.setTabBarBadge({
					  index: 2,
					  text: ""+count+""
					})
				}
			},
			//监听image加载完成
			onImageLoad(key, index) {
				this.$set(this[key][index], 'loaded', 'loaded');
			},
			//监听image加载失败
			onImageError(key, index) {
				this[key][index].image = '/static/errorImage.jpg';
			},
			navToLogin(){
				uni.navigateTo({
					url: '/pages/public/login'
				})
			},
			 //选中状态处理
			check(type, index){
				if(type == 'item'){
					// this.cartList[index].checked = !this.cartList[index].checked;
					this.$set(this.cartList[index],'checked',this.cartList[index].checked?false:true)
				}else{
					const checked = !this.allChecked
					const list = this.cartList;
					list.forEach((item,i)=>{
						this.$set(this.cartList[i],'checked',checked)
						// item.checked = checked;
					})
					this.allChecked = checked;
				}
				console.log(this.cartList)
				this.calcTotal(type);
			},
			detail(id){
				uni.navigateTo({
					url:'/pages/client/shop/product?id='+id
				})
			},
			//数量
			numberChange(data){
				console.log(data);
				this.addgwc(data.number,this.cartList[data.index].id)
				this.cartList[data.index].num = data.number;
				this.calcTotal();
				
			},
			//删除
			// deleteCartItem(index){
			// 	let list = this.cartList;
			// 	let row = list[index];
			// 	let id = row.id;
			// 	this.cartList.splice(index, 1);
			// 	this.calcTotal();
			// 	uni.hideLoading();
			// },
			//计算总价
			calcTotal(){
				let list = this.cartList;
				if(list.length === 0){
					this.empty = true;
					return;
				}
				let total = 0;
				let checked = true;
				list.forEach(item=>{
					if(item.checked === true){
						total += item.money * item.num;
					}else if(checked === true){
						checked = false;
					}
				})
				console.log(this.cartList)
				this.allChecked = checked;
				this.total = Number(total.toFixed(2));
			},
			//创建订单
			createOrder(){
				let list = this.cartList;
				let goodsData = [];
				list.forEach(item=>{
					if(item.checked && item.num>0){
						goodsData.push({
							sku_id: item.id
						})
					}
				})
					uni.navigateTo({
						url: `/pages/client/shop/buy?id=0&data=${JSON.stringify(goodsData)}`
						// url: '/pages/client/shop/buy?id=0'
					})
				
			}
		}
	}
</script>

<style>
	page{
		background: #fff;
	}
</style>
<style lang='scss'>
	.text-green{
		color: rgb(1, 183, 80) !important;
	}
	.container{
		padding-bottom: 134upx;
		/* 空白页 */
		.empty{
			position:fixed;
			left: 0;
			top:0;
			width: 100%;
			height: 100vh;
			padding-bottom:100upx;
			display:flex;
			justify-content: center;
			flex-direction: column;
			align-items:center;
			background: #fff;
			image{
				width: 240upx;
				height: 160upx;
				margin-bottom:30upx;
			}
			.empty-tips{
				display:flex;
				font-size: $font-sm+2upx;
				color: $font-color-disabled;
				.navigator{
					color: $uni-color-primary;
					margin-left: 16upx;
				}
			}
		}
	}
	/* 购物车列表项 */
	.cart-item{
		display:flex;
		position:relative;
		padding:30upx 40upx;
		.image-wrapper{
			width: 230upx;
			height: 230upx;
			flex-shrink: 0;
			position:relative;
			image{
				width: 230upx;
				height: 230upx;
				border-radius:8upx;
			}
		}
		.checkbox{
			position:absolute;
			left:-16upx;
			top: -16upx;
			z-index: 8;
			font-size: 44upx;
			line-height: 1;
			padding: 4upx;
			color: $font-color-disabled;
			background:#fff;
			border-radius: 50px;
		}
		.item-right{
			display:flex;
			flex-direction: column;
			flex: 1;
			overflow: hidden;
			position:relative;
			padding-left: 30upx;
			.title,.price{
				font-size:$font-base + 2upx;
				color: $font-color-dark;
				height: 40upx;
				line-height: 40upx;
			}
			.attr{
				font-size: $font-sm + 2upx;
				color: $font-color-light;
				height: 50upx;
				line-height: 50upx;
			}
			.price{
				height: 50upx;
				line-height:50upx;
			}
		}
		.del-btn{
			padding:4upx 10upx;
			font-size:34upx; 
			height: 50upx;
			color: $font-color-light;
		}
	}
	/* 底部栏 */
	.action-section{
		/* #ifdef H5 */
		margin-bottom:100upx;
		/* #endif */
		position:fixed;
		left: 30upx;
		bottom:30upx;
		z-index: 95;
		display: flex;
		align-items: center;
		width: 690upx;
		height: 100upx;
		padding: 0 30upx;
		background: rgba(255,255,255,.9);
		box-shadow: 0 0 20upx 0 rgba(0,0,0,.5);
		border-radius: 16upx;
		.checkbox{
			height:52upx;
			position:relative;
			image{
				width: 52upx;
				height: 100%;
				position:relative;
				z-index: 5;
			}
		}
		.clear-btn{
			position:absolute;
			left: 26upx;
			top: 0;
			z-index: 4;
			width: 0;
			height: 52upx;
			line-height: 52upx;
			padding-left: 38upx;
			font-size: $font-base;
			color: #fff;
			background: $font-color-disabled;
			border-radius:0 50px 50px 0;
			opacity: 0;
			transition: .2s;
			&.show{
				opacity: 1;
				width: 120upx;
			}
		}
		.total-box{
			flex: 1;
			display:flex;
			flex-direction: column;
			text-align:right;
			padding-right: 40upx;
			.price{
				font-size: $font-lg;
				color: $font-color-dark;
			}
			.coupon{
				font-size: $font-sm;
				color: $font-color-light;
				text{
					color: $font-color-dark;
				}
			}
		}
		.confirm-btn{
			padding: 0 38upx;
			margin: 0;
			border-radius: 100px;
			height: 76upx;
			line-height: 76upx;
			font-size: $font-base + 2upx;
			background: $uni-color-primary;
		}
	}
	/* 复选框选中状态 */
	.action-section .checkbox.checked,
	.cart-item .checkbox.checked{
		color: $uni-color-primary;
	}
</style>
